On Mon, 8 Nov 2004 09:58:10 -0800, "Joel Kolstad"
wrote:

Will the current on the inner conductor be identical to the case
where there is no shield? Is there any current on the shield? Does
anything change if I ground the shield?

Hi Joel,

A 1M loop in a 1Hz field, Hmm?

Why bother with the complication of shielding? Take a 1M loop of
wire, connect it to your MOST sensitive ammeter (mine will resolve at
least 1 nanoampere).

By simply going to my lab, and turning on the unit, this allowed me to
test my hypothesis as leads that long were already attached.

I used the earth's magnetic field and a nearby fluorescent fixture (80
W) to find absolutely NO sensitivity at all on AC or DC scales
(turning the loop in earth's magnetic loop to simulate the lower 1Hz
frequency you specify).

Now, I know that for studies of low frequency magnetics, the usual
antenna has 10 to 20 thousand turns on an 18" ferrite bar, I think
that a 1M open air loop is destined for deafness.

Of course, this will serve as no impediment to those who can count
angels on the head of a pin, so your question will undoubtedly be met
with great fuss.

73's
Richard Clark, KB7QHC